This is a phase III, open label, randomized study assessing JYP0322 (150 mg, orally, tid) versus platinum-based doublet chemotherapy in subjects with confirmed diagnosis of ROS1 fusion positive NSCLC, who have progressed following prior therapy with one or two approved ROS1 Tyrosine Kinase Inhibitor (ROS1-TKI) agents and whose tumors harbors a ROS1 fusion positive. Subjects must agree to provide a biopsy for central confirmation of ROS1 fusion status. A total of 207 patients will be randomly assigned in a 2:1 ratio to receive oral JYP0322 (at a dose of 150mg tid) or intravenous pemetrexed (500 mg per square meter of body-surface area) plus carboplatin (target area under the curve 5 \[AUC5\]) every 3 weeks for up to six cycles. Patients without disease progression after four cycles of platinu
